What Would Have Happened if Aslan Had Stayed Dead?

Aslan brought spring again to Nairia through his death and resurrection. What would have happened if Tania, if Aslan's death, said? Well that is another hypothetical question which is very hard to answer because we're not really told. If Christ has not been raised then nobody can be raised. We are still in our sins so presumably the same thing would have happened in Nairia if Aslan had not come back to life with the rising of the sun on the stone table.